A free app for Android, by Vnstart LLC.

Fun Water Sorting is a puzzle game for all ages and skill levels. It’s easy to learn and yet very challenging. Your goal is to sort the colored water in each tube until all of the same color are in the same tube. There are various levels with different numbers of tubes and different arrangements of tubes, but the difficulty increases as you go further into the game. You have to think fast and use your brain. If you get stuck, you can use hints to help you sort the colors. The game is fun and relaxing, perfect for a long commute or a boring meeting.

Fun Water Sorting is a game of sorting and filling, but with a twist. You have to use your mind to solve the puzzle.